Mechanical movement.



F. M. FURBER.

MECHANICAL MOVEMENT. APPLICATION FILED NOV-4.1914.

1 268,832@ Patented June 11, 1918 2 SHEETS-SHEET l- W4 F n F. M. FURBER.

MECHANICAL MOVEMENT.

APPLICATION FILED NOV-4,1914.

. Patented June 11, 1918..

2 'SHEETSSHEET 2 VV/T/VESSES sole edge and burnish it.

FREDERICK M. FURBER, OF REVERE, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, 'IO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented June 11,1918.

To all whomit may concern:

Be it known that I, FREDERICK M. FURBER, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Mechanical Movements, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention primarily concerns mechanical movements and is shown and described in connection with an edge-settin machine, but I do not wish to be restricted to this class of machinery in its application, as I believe it to be generally useful in all situations where it is necessary to transform rotary into oscillatory motion.

In one type of edge-setting machine, a heated tool is oscillated rapidly over the edge of the shoe sole to set the fibers of the In operating these machines the Workman stands in front of the machine with his feet spread apart, and holds the sole edge in contact with the oscillating tool. It hasbeen found that the machines hitherto used are subject to a reat deal of vibration when driven as rapi y as the operation of edge setting demands, and

that this vibration causes a great deal of noise, rapidly Wearies the workman and wears out the machine. This excessive vibration arises from the fact that in the machines used heretofore a single revolution of the main driving shaft causes a single complete oscillation of the shaft which carries the edge-setting tool, z. 6., a movement from one extreme position to the other, and back again; and in order to drive the edgesetting tool with suflicicnt rapidity it is neoessary to (11'1"8 the main shaft at corresponding speed. The invention about to be described produces two complete oscillations of the tool-carying shaft for every complete revolution of the main driving shaft, thus securing the same speed of the edge-setting tool, while halving the speed of the main driving shaft. I have found that this driving of the main shaft at half speed largely eliminates vibration, and the consequent noise, fatigue of the workman and wear of the machine.

In the drawings, which show one embodi-- ment of my invention,

Figure l is a perspective view, partly in section; and

Figs. 2, 3, 4 and 5 are diagrammatic front elevations showing a series of four positions of the device.

The standard 1 and the split bearing 2 are of Well-known construction. A crowned pulley 3 is rotatably mounted on a bushing 4, running against a shoulder 5 on said bushing, and the bushing 4 is'keyed in the bearing 2 by the key 6. The inside face of the pulley 3 runs a ainst the face 7 of the bear- .ing 2. The pu lley 3 has a very heavy rim or fly-wheel 8. A shaft 9, the broken'away end of which is intended to carry the edgesetting tool when the device is used on such a machine, is rotatably mounted in the bushing 4, coaxial with the pulley 3, and it is the purpose of the device to transform rotary motion of the pulley 3 into oscillatory motion of the shaft 9.

A collar 10 is keyed to the shaft 9 by the pin 11 and bears against the end of the bushing 4. The bushing 4 carries at its end a substantially radial arm 12, with a downturned U-shaped end 13, which carries the tubular axle 14 of hardened steel. The collar 10 carries an arm 15 with a U-shaped end 16 and tubular axle 17 of hardened steel. The shapes of the arms 12, 13 and 15, 16 are substantially alike, but they are oflfset so that the axles 14, 17 are directly opposite each 7 other.

The axle 14 carries the Ishaped end 18 of the toggle link 19, and the axle 17 carries the I-shaped end of a toggle-link 20, the Is being mounted between the legs of the annular eccentric race 23 which contains an eccentric ring 24. The ring 24 is of the same depth as the race 23, but has the central portion of its rear flat face cut away, as at 23 to eliminate friction. The entire outer cylmdrical'face of the ring is cut away slightly for the same reason. The ring, therefore, has a bearing in the flange 8 on its inner cylindrical face and a steadying bearing on its rear flat face. It has been found that the lack of bearing on the outside cylindrical face does not unfavorably affect the even running of the device. This ring 24 carries a pin 25 mounted at right angles to its surface, and the pin 25 has a rotary bearing in the ends 21, 22 ofthe links 19, 20. A washer 26 lies between the ring 24 and the inside U leg 22, and the nut 27 completes the joint.

Figs. 2, 3, 4 and 5 show in full lines four positions of the moving parts separated by substantially quarter clockwise revolutions of the pulley 3. Figs. 2, 3, 4 and 5 show in dotted lines the positions shown in full lines in Figs. 5, 2, 3 and 4 respectively, so that each of those four figures shows the change in the positions of the moving parts due to an approximately 90 turn of the pulley 3. Fig. 3 shows that the first approximate quarter revolution of the pulley 3 raises the eccentric ring 24 and its pin 25 and draws the arm 15 inward through the toggle action of the links 19, 20. The next approximate quarter revolution (see Fig. 4)

lowers the eccentric ring and pin and pushes the arm 15 outward. The third approximate quarter revolution (see Fig. 5) lowers the eccentric ring and pin and pulls the arm 15 inward, Whilethe fourth approximate quarter revolution (see Fig.' 1) raises the eccentric ring and pin to their initial positions and pushes the arm 15 outward. Thus a single complete revolution of the pulley 3 will produce twocomplete cycles of oscillation of the arm 15 and consequently of the shaft 9.

The eccentric ring 24, the toggle linkage 19, 25, 20, and the'arm 15 combined have a mass that is relatively small as regards that of the pulley 3 with its heavy flange 8, and the shaft 9. The links 19, 20 are short and need not be heavy in order to take the stresses which come upon them. The axles 14, 17 are tubular and consequently light. The concentricity of the shaft 9 and the pulley 3 is regarded as an important feature in securing this compact and light form of the non-central moving parts. It will be observed that the removal of material from the race 23 unbalances the pulley 3 while the restoration of a substantially equal mass of material in the ring 24 tends to rebalance it. The great mass of the pulley 3 and its flange 8 as compared with that of the ring 24 and the unbalanced non-rotating parts it operates is also very instrumental in reducing vibration. A cap having a central bearing for the shaft 9 may he slipped on and bolted to the flange 8 to completely inclose the smaller parts which may then be run in oil- This cap, being itself balanced, adds to the stability of the device. It has been found when the pulley 3 is run at 1800 revolutions per minute, or even more, thus giving 7200 oscillations or more per minute of the shaft 9, that the device is remarkably free from vibration, noise and wear. While I have shown the pulley 3 and the shaft 9 as coaxial, it is not necessary that they be coaxial, or that their axes be even parallel.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is v 1. In a mechanism of the character described, the combination of a rotary driving member, a driven member mounted for movement about an axis substantially parallel with the axis of said driving member, the driving member encircling the driven member, and mechanism for transforming the rotary motion of said driving member into oscillatory motion of said driven member.

2. In a mechanism of the character described, the combination of a rotary driving member, a shaft supported substantially concentric with said member, a mechanism connecting said shaft and said member and arranged to transform the rotary motion of said driving member into oscillatory motion of said shaft.

3. In a mechanism of the character described, the combination of a rotary driving member, a shaft supported substantially concentric with said member, and mechanism connecting said shaft and said member and arranged to transform the rotary motion of said driving member into oscillatory motion of said shaft, said mechanism being operative to cause said shaft to make two complete oscillations at each rotation. of said member.

4. The combination of a rotary driving member, a shaft supported within said member, a link mechanism connected with said shaft, and mechanism for operating said link mechanism to oscillate said shaft.

5. The combination of a rotary driving member, a shaft supported within said member, a toggle mechanism connected to the shaft, and means operated by the driving member to make and break said toggle mechanism.

6. The combination of a rotary driving member, a shaft supported concentrically within said member, a toggle mechanism connected to said shaft, and means constructed and arranged for making and breaking said toggle while moving in two directions.

7. The combination of a rotary driving member, a shaft supported concentrically within said member, a toggle mechanism connected to said shaft, and means constructed and arranged for making and breaking said toggle while moving continuously in the same direction.

8. The combination of a rotary driving member, a shaft supported concentrically within said member, a toggle mechanism connected to said shaft, and means operated by the driving member for making and breaking said toggle twice during each revolution of said driving member.

9. A support, a driving element rotatably mounted on said support, a rock-shaft mounted on said support, a link mounted on said support, a second link mounted on said rock-shaft, and an element mounted on said driving element and connected to both of said links.

10. A support, a rock-shaft mounted on said support, a pivot mounted on said support, a pair of toggle links connecting said rock-shaft and said pivot, and a rotary driving element mounted on said support, operatlvely connected to one of said toggle links between said pivot and said rock-shaft whereby rotary motion of said driving element is transformed into oscillatory motion of said rock-shaft.

11. A support, a rock-shaft mounted on said support, a link pivoted on the support, a second link pivoted on the rock-shaft, and a rotary driving element voperatively connected to both of said links.

12. A support, a rock-shaft mounted on said support, a toggle system pivoted at one of its ends to the rock-shaft and at its other end to the support, and a rotary driving element operatively connected to said toggle system between its ends.

13. A support, a reciprocating element mounted on said support, a linkage system pivoted at one of its end to the reciprocat ing element, and at its other end to the support, and an operating means connected to each member of the linkage system whereby said element is caused to reciprocate.

14. A support, a rock-shaft mounted in said support, a linkage system pivotally connected to the support and to the rock-shaft, a rotary driving element, and an eccentric connecting the linkage system and the driving element whereby rotary motion of said driving element is transformed into oscillatory motion of said rock-shaft.

15. A support, a reciprocating element mounted in said support, pivot mountings on said support and said element, a toggle system pivoted between said pivot mountings, a rotary driving element, and an eccentric connecting the toggle system and the rotary driving element.

16. A support, a rock-shaft mounted on said support, a link pivotally attached to said support, second link pivotally attached to said rock-shaft, a rotary drivin element, and an eccentric connecting said drivin element with said links.

17. I support, a rock-shaft mounted on said support, a link pivotally attached to said support, a second link pivotally attached to said rock-shaft and to the first-mentioned link, a rotary driving element, and an eccentric connecting said rotary driving element and one of the said links. 4

18. A support, a rock-shaft mounted on said support, pivot mountings on said support and said rock-shaft, a linkage system extending between said pivot mountings, a rotary drive element mounted on said sup port, an eccentric mounted on said rotary drive element, and a wrist-pin on said eccentric, pivotally mounted in said linkage system.

19. A support, a rock-shaft mounted on said support, a link pivoted at one end to said support, a second link pivoted at one end to said rock-sh'aft, a rotary driving ele ment mounted on said support, an eccentric carried by said driving element, and a wrist pin mounted on said eccentric and pivotally connected with the, other ends of said links.

20. A support, a rock-shaft mounted on said support, a rotary driving element mounted on said support, and mechanism for transforming the rotary motion of said driving element into oscillatory motion of said shaft, comprising an eccentric ring directly connected with and movable relatively to the driving element, the mass of which is small as compared with that of the drivin element.

21. support, an oscillating member mounted on'said support, a rotary driving element mounted on said support and mechanism for transforming the rotary motion of said driving element into oscillatory motion of said oscillating member comprising a member having a plurality of surfaces and contacting with the said driving element along said surfaces. 22. A rotary driving element having a race therein, a rock-shaft, an element having a machine fit in said race, but not in contact with the entire surface thereof, and means operated by said element to oscillate the rock-shaft.

23. A rotary driving element having a race therein formed by a plurality of surfaces, a rock-shaft, an element having a masaid member, comprising a part lying inchine fit in said race, but not in contact with one of said surfaces, and means operated by said element for oscillating the rock-shaft.

24:. A support, an oscillating member mounted on said support, a rotary driving element mounted on said support, and mechanism for transforming the rotary motion of said driving element into oscillatory motion of said member comprising a member lying within said driving element.

25. A support, an oscillating member mounted on said support, a, rotary driving element mounted on said support, said driving element having a groove, and mechanism for transforming the rotary motion of said driving element into oscillatory motion of said groove.

26. A support, a rotary driving element having a race mounted on said support, a rock-shaft mounted in said support, an arm on the support, an arm on the rock-shaft, links connecting said arms, and an eccentric lying in said race and pivoted to said arms.

27. A support, a rotary driving element, a rock-shaft, a fly-wheel connected to the driving element and having an eccentric race, a toggle linkage between said support and said rock-shaft and an eccentric member lying in said race and pivoted to said linkage.

28. A support, a rock-shaft, a rotary driving element and a fly-wheel mounted on said support, and means for transforming rotary motion of said driving element into oscillatory motion of said rock-shaft comprising an eccentric mounted on said fly-wheel, and a linkage mounted on said eccentric and connected with said rock-shaft.v

29. A rotary element having an eccentric race, an eccentric member lying in and substantially filling said race, and mechanism combined to be operated by said eccentric member, the element and eccentric member forming a substantially balanced member.

30. A rotary element havin a race eccentric to the periphery of said e ement, and an eccentric member lying in said race and substantially equal in mass to an amount of the material composing the rotary element sufiicient to fillsaid race.

31. The combination of a rotary driving member, a shaft supported within said mem-. her, and mechanism for transforming rotary motion of said driving member into oscillatory motion of said shaft.

32. A support, a rock-shaft mounted on said support, a pair of toggle links connecting said rock-shaft and said support, and a rotary driving element mounted in said sup port and operatively connected to one of said toggle links between said support and said rock-shaft whereby rotary motion of said driving element is transformed into oscillatory motion of said rock-shaft.

33. A rotary element having an eccentric groove, an eccentric member lying in and substantially complementary in form to the groove, and mechanism to be operated by the eccentric member.

3ft. In a machine of the class described, a rotary driving member and a driven member, one of said members encircling the other, and a toggle for transforming rotary motion of the driving member into oscillatory motion of the driven member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LAURA M. Goonnmen, CHESTER E. RocERs. 

